Key-fastener



(No Model.)

L. H. REDPIELD.

KEY FASTENER. No. 597,547. Patented Jan. 18, 189 8.

ATTORNEYS UNITED STATES PATENT FFlChl LEXVIS H. REDFIELD, OF SYRACUSE,NEW YORK.

KEY-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 597,547, dated January18, 1898.

Application filed August 7, 1896. Serial No. 601,960 (No model.) 7

To (425 whom it may concern.-

Be it known that I, Lnwrs H. REDFIELD, of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Key-Locks, of which the following, taken in connectionwith the accompanying drawings, is a full, clear, and exact description.

My invention relates to improvements in key-locks, and has for itsobject the production of a simple and practical device which is readilyand cheaply manufactured and applied and prevents the turning andremoval of keys remaining in their locks; and to this end it consists,essentially, in the general construction and arrangement of thecomponent parts of said key-lock.

In describing this invention reference is had to the accompanyingdrawings, forming a part of this specification, in which like lettersindicate corresponding parts in all the views. I

Figure 1 is an isometric View of my improved key-lock, a key being shownas operatively arranged therein and as engaged by the lockingplate forpreventing its turning and removal. Fig. 2 is a vertical sectiontakenjon line 2 2, Fig. 1. Figs. 3, 4, and 5 are isometric views of thedetached plates of the support and the looking-plate of my improvedkey-lock.

As is well known, locks in which the keys are allowed to remain areoften opened by burglars by means of suitable tools for turning the keysor else ejecting the same from the locks to permit the insertion of askeleton key or other look-opening device. My invention is designed toprevent turning or removal of keys remaining in their looks in order toprevent undue looking or picking of said looks.

A is a support, and B a locking-plate movable thereon for engaging a key0. The support A is of any suitable form, size, and construction and isprovided with openings to a for facilitating its securement to a door orother device (not illustrated) provided with a look (also notillustrated) for the key 0. As preferably constructed, the support Aconsists of separated plates (1. of, Figs. 3 and at, which are united atsubstantially their central portions by pins or projections a Fig. 1,arranged one above the other. plates (6 a are provided with eyes andslots a a through which the key 0 is movable, and one of said plates isformed at its upright sides with laterally-extending ribs or projectionsa", which engage the adjacent sides of the other plate. Thelocking-plate B is preferably reciprocally movable in the guide formedbetween the plates a a and the ribs or projections a and is formed atone extremity witha lateral projection or extension 1) for facilitatingengagement thereof. The upper and lower extremities of the plate B areprovided with lengthwise apertures b I), through which the pins orprojections a are passed for additionally guiding said plate in thismovement. The central'portion of the plate B is formed with an eye Z7and a slot 17 similar in form and size to the eyes and slots a a forpermitting the passage of the key 0, the stem or body 0 of which isnormally free to turn in the eyes a b and is provided with a collar orshoulder 0', arranged normally at the inner side of the plate 13. A slotZ) extends lengthwise of the plate B from the upper side of the eye Z9and is formed with substantially parallel edges, and when the plate B ismoved downwardly the slot 12' receives the key and said edges engage aflattened portion c of the stem or body 0 and prevent rotation of thekey. Removal of the key when the plate B is in said position is alsoprevented, since the slot 11 is not sufficiently wide to permit thepassage of the collar or shoulder a, which engages the inner face ofsaid plate when removal of the key is attempted.

The operation of my invention will now be readily understood uponreference to the foregoing description and the accompanying drawings.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

A key-lock comprising a support consisting of a front plate and a rearplate, separated from each other, the rear plate being provided withribs or flanges that extend laterally from the side edges thereof andadapted to overlap the side edges of the front plate, each plate havinga central eye and an oblong-shaped slot extending therefrom throughwhich a key The 7 ed to engage the shank of the key and pre may bepassed, pins or projections fornniting the two plates, a locking platevertically reciprocally movable between said plates and ribs or flanges,said looking-plate being pro videdwith a central eye and slot, similarto those in the tWo plates, a second slot extendin g upwardly from thecentral eye and ad aptvent the turning thereof, two additionaloblong-shaped slots arranged one above and one below the, central eyeand slots and in substantially the same vertical plane therewith, and alateral projection or flange'at oneend of pose set forth.

In testimony whereof I have hereunto signed my name, in the presence oftwo attesting witnesses, at Syracuse, in the countyof Onondaga intheState of NewYork, this 11th day of July, 1896.

' LEWIS H. REDFIELD.

lVitnesses: r

I E; A. WEISBURG,

FRANK F. BREWER.

I the said looking-plate, and means for attaching the key-lock to a dooror other device, substantially as described and for the pur-

